Recent Posts



Malaysia Review 2 (Jan-Jul '21): SW Peninsular Malaysia - Selangor, Negeri Sembilan, Melaka, Johor

Welcome to the second installment of the Malaysia review. We’ll be covering the rest of the west coast along with Johor this time.

Before we proceed, here are the raw images used for the analyses for Part 1 & Part 2


1. we are using the 2021 GLAD dataset* (up to 13 Jul) along with

2. Planet satellite images (register free account).

*note: this means forest loss from 2020 will not be included

We will structure each section with

i) a state-level overview followed by

ii) a list of affected forest reserves (FRs) and protected areas (PAs) – if any detected – and

iii) zoom down to explore particularly ghastly-looking areas with the free Flourish slider tool.

Click on the slider on the middle of the images with the Flourish logos (bottom right) and drag the slider either direction to compare Jun 2020 vs Jun 2021 images.

Let’s begin.


Being the most industrialized Malaysian state, we didn’t expect the Selangor-KL-Putrajaya landscape to harbor many hotspots at all. We did not find large hotspots, but the ones detected are listed below after the overview (Figure 1).

Figure 1 GLAD alerts (2021) overlaid with PRF (2011) and Protected Areas in Selangor-KL-Putrajaya (click image to view in high-resolution).

Impacted FRs & PAs include:

1. Sungai Karang – peat swamp forest

2. Raja Musa – peat swamp forest

3. Bukit Tarek

4. Selangor State Park – road construction

5. Bukit Lagong

6. Rantau Panjang

7. Kuala Langat Utara – peat swamp forest

8. Kuala Langat Selatan

Here come the sliders

1. Sungai Karang FR

Figure 1.1 Affected areas in Sungai Karang FR, a peat swamp forest. The land use pattern in the area suggests that it has been degazetted, at least in the affected areas.

3. Bukit Tarek FR

Figure 1.2 Affected areas in Bukit Tarek FR, hill forest.

4. Selangor State Park

Figure 1.3 Affected areas in Selangor State Park with a pattern indicating a road/ powerline being built from Lata Medang across the State Park to Tranum FR in Pahang. The area is separate from the other known projects affecting the State Park (i.e. ECRL & EKVE).

5. Bukit Lagong FR

Figure 1.4 Affected areas in Bukit Lagong FR. This is probably the area that was embroiled in heated discussions in 2019, implicating a Chinese developer. Guess they went on ahead while everyone stayed home?

6. Rantau Panjang FR

Figure 1.5 Affected areas in Rantau Panjang FR. We’re pretty sure that upper-half has been degazetted, but clearing patterns in the lower portion does raise a few questions.

7. Kuala Langat Utara FR

Figure 1.6 Affected areas in Kuala Langat Utara FR. Some digging showed that this area has probably been degazetted a while ago, with Gamuda Cove now bordering the Kuala Langat Utara FR, better known as KLNFR. Nonetheless, since we haven’t gotten an official dataset/announcement indicating that the area has been degazetted, we decided to keep it.

The team is rather surprised at the number of highlights found in Selangor-KL-Putrajaya, but I suppose we shouldn’t be.

Negeri Sembilan

Quaint Negeri Sembilan had a number of significant hotspots outside of FRs & PAs in the south, but only a few moderate cases worth exploring in the FRs. Have a look at the overview below before we list the FRs impacted (Figure 2).

Figure 2 GLAD alerts (2021) overlaid with PRF (2011) and Protected Areas in Negeri Sembilan (click image to view in high-resolution).

Impacted FRs include:

1. Kenaboi (East)*

2. Kenaboi (West)*

3. Pasoh

4. Lenggeng

5. Berembun

6. Triang & Serting

*both FRs apparently have the same name – we assigned them “East” & “West” to differentiate the two by location

Time to explore some hotspots.